CN113922140B - Harness and grommet anti-shedding structure - Google Patents

Abstract

A wire harness, comprising: a connector; a grommet assembled to the connector and brought into close contact with an opening edge portion of the mounting hole; and a plurality of wires inserted into the grommet. The connector includes: a terminal fitting provided at an end of the plurality of electric wires; a connector housing accommodating the terminal fitting; and an inner member having an annular plate-like flange provided on an outer side of the connector housing. The grommet includes: a flange assembly part assembled to the flange; and a wire accommodating dome portion accommodating lead-out portions of the plurality of wires led out from the connector housing; the inner member includes two deformation preventing walls that prevent inward deformation of the wire receiving dome portion.

Description

Harness and grommet anti-shedding structure

technical field

The present disclosure relates to a wire harness and a grommet fall-off preventing structure, and more particularly, to a wire harness and a grommet fall-off preventing structure including a grommet fall-off preventing structure that prevents grommets constituting a waterproof structure from falling off.

Background technique

JP-A-2017-191636 discloses a prior art waterproof structure provided on a panel of an automobile door. In FIG. 21A , the waterproof structure 1 of the prior art includes a panel 3 having a mounting part 2 , a connector 4 arranged to be aligned with the mounting frame 2 , and an opening edge portion assembled to the connector 4 and tightly fitted to the mounting hole 2 . Contact grommet 5. The connector 4 includes a connector housing 6 and an inner member 7 . The inner member 7 includes an annular plate-shaped flange 8 provided on the outside of the connector housing 6 . The grommet 5 includes a panel tight contact portion 9 , a flange assembly portion 10 , and a wire accommodating dome portion 11 . The grommet 5 is made of rubber and has flexibility. The wire accommodating dome portion 11 is formed in a dome shape as shown in the drawings, having a U-shaped cross section for accommodating a plurality of wires (outlet portions not shown) just drawn out from the connector housing 6 . This makes the assumption that a plurality of electric wires are bundled together, and that the tubular portion accommodating the electric wires is continuous with the electric wire accommodating dome portion 11 .

In the prior art described above, when an external force indicated by an arrow P in FIG. 21A is applied to the side 12 of the wire accommodating dome 11 for some reason, the side 12 of the wire accommodating dome 11 may occur as shown in FIG. 21B. The shown inward deformation, and at this time, the flange assembly part 10 may fall off from the flange 8 . When the flange assembly part 10 falls off, that is, when the grommet 5 falls off, moisture enters, so the waterproof performance cannot be guaranteed.

Contents of the invention

The present disclosure has been made in view of the above circumstances, and an object thereof is to provide a wire harness and a grommet fall-off prevention structure including a grommet fall-off preventing structure that prevents the grommet from falling off.

Aspects of non-limiting embodiments of the present disclosure relate to a wire harness comprising: a connector disposed in alignment with a mounting hole of a panel; a grommet assembled to the connector and fitted with an opening edge of the mounting hole and a plurality of wires inserted into the grommet. The connector includes: terminal fittings provided at ends of the plurality of electric wires; a connector housing accommodating the terminal fittings; and an inner member having an inner member provided outside the connector housing. annular plate flange. The grommet includes: a panel tight contact portion that is in close contact with the edge portion of the one opening; a flange assembly portion that is assembled to the flange; and a wire receiving dome that receives the The lead-out portion of the plurality of electric wires drawn out from the connector housing. The inner member includes two deformation preventing walls that prevent inward deformation of the wire receiving dome. The two deformation-preventing walls extend along a wall inner surface of the wire accommodating dome and are disposed with the lead-out portion disposed therebetween.

According to the wire harness of the present disclosure, the grommet can be prevented from coming off by the two deformation preventing walls. In addition, the grommet fall-off preventing structure according to the present disclosure can also prevent the grommet from falling off through the two deformation-preventing walls, thus providing a better structure.

Description of drawings

1A and 1B are views showing an embodiment of a wire harness and a grommet fall-off preventing structure according to the present disclosure, wherein FIG. 1A is an overall view of the wire harness, and FIG. 1B is a view showing that a connector housing is omitted from FIG. 1A . A view of the state of the body.

2A, FIG. 2B and FIG. 2C are cross-sectional views taken along line AA in FIG. 1B , wherein FIG. 2A is a schematic diagram of the anti-deformation wall according to the first embodiment, and FIG. 2B is a diagram of the anti-deformation wall according to the second embodiment. Schematic diagram and FIG. 2C is a schematic diagram of the anti-deformation wall according to the third, fourth and fifth embodiments.

Fig. 3 is a view of an inner member including a deformation preventing wall corresponding to Fig. 2A, and is a view seen from the direction of arrow B in Fig. 1B (first embodiment).

FIG. 4 is a perspective view of the inner member of FIG. 3 .

Fig. 5 is a view of an inner member including a deformation preventing wall corresponding to Fig. 2B, and is a view seen from the direction of arrow B in Fig. 1B (second embodiment).

FIG. 6 is a perspective view of the inner member of FIG. 5 .

FIG. 7 is a perspective view of the interior of the first division in FIG. 6 .

FIG. 8 is a perspective view of the interior of the second division in FIG. 6 .

Fig. 9 is a view of an inner member including a deformation preventing wall corresponding to Fig. 2C, and is a view seen from the direction of arrow B in Fig. 1B (third embodiment).

FIG. 10 is a perspective view of the inner member of FIG. 9 .

FIG. 11 is a perspective view of the interior of the first division in FIG. 10 .

FIG. 12 is a perspective view of the interior of the second division in FIG. 10 .

Fig. 13 is a view of an inner member having a deformation preventing wall corresponding to Fig. 2C, and is a view seen from the direction of arrow B in Fig. 1B (fourth embodiment).

FIG. 14 is a perspective view of the inner member of FIG. 13 .

FIG. 15 is a perspective view of the interior of the first division in FIG. 14. FIG.

FIG. 16 is a perspective view of the interior of the second division in FIG. 14 .

Fig. 17 is a view of an inner member having a deformation preventing wall corresponding to Fig. 2C, and is a view seen from the direction of arrow B in Fig. 1B (fifth embodiment).

FIG. 18 is a perspective view of the inner member of FIG. 17. FIG.

FIG. 19 is a perspective view of the interior of the first division in FIG. 18. FIG.

FIG. 20 is a perspective view of the interior of the second division in FIG. 18. FIG.

21A and 21B are cross-sectional views showing a conventional waterproof structure, wherein FIG. 21A is a configuration diagram, and FIG. 21B is a state diagram showing a state where a grommet is detached by an external force.

Detailed ways

The wire harness includes a connector arranged to be aligned with a mounting hole of the panel, and a grommet assembled to the connector and closely contacting an opening edge portion of the mounting hole. The connector includes a connector housing and an inner member. The grommet includes a panel tight contact portion, a flange assembly portion, and a wire containment dome. The inner member includes an annular plate-shaped flange provided on the outside of the connector housing and two deformation-preventing walls. The two deformation preventing walls are formed in a shape extending along a wall inner surface of the wire accommodating dome and in a shape in which a plurality of wires are disposed therebetween.

The two deformation preventing walls are respectively formed with a straight I-shaped section. Alternatively, the two deformation preventing walls are each formed with a J-shaped cross-section whose tip portion is bent, and is formed with a U-shaped cross-section when both are viewed as a whole. Alternatively, the two deformation preventing walls are respectively formed with a straight I-shaped section and a J-shaped section with a curved middle portion, and are formed with a U-shaped section when both are viewed as a whole. Two deformation preventing walls are provided on the sides of the pair of straight portions of the elliptical mounting hole of the panel. The above-mentioned grommet fall-off prevention structure is adopted in the wire harness.

[first embodiment]

Hereinafter, a first embodiment will be described with reference to the drawings. 1A and 1B are views showing an embodiment of a wire harness and a grommet fall-off preventing structure according to the present disclosure, wherein FIG. 1A is an overall view of the wire harness, and FIG. 1B is a view showing that a connector housing is omitted from FIG. 1A . A view of the state of the body. 2A, 2B, and 2C are cross-sectional views taken along line AA in FIG. 1B , FIG. 3 is a view of an inner member including a deformation-preventing wall corresponding to FIG. 2A , and FIG. 4 is a perspective view of the inner member in FIG. 3 .

<Wire Harness 21>

In FIGS. 1A and 1B , the wire harness 21 is routed through an open and closed position such as a door of a car. The wire harness 21 wired in this way requires a waterproof structure 22 as in the case of the prior art. In the present disclosure, the grommet fall-off prevention structure 23 is adopted to maintain the waterproof function of the waterproof structure 22 . The wire harness 21 includes a connector 24 on one end side, a connector (not shown) on the other end side, a plurality of electric wires 25 , and a grommet 26 . The wire harness 21 is connected to a mating connector (not shown) of the vehicle body via a connector 24 on one end side, and is connected to a connector (device, not shown) on the door side via a connector (not shown) on the other end side. ). In the wire harness 21 , a connector 24 on one end side is provided in alignment with a mounting hole 28 of a panel 27 (see FIGS. 2A to 2C ). The harness 21 includes a grommet 26 as a waterproof structure 22 to prevent moisture from entering the interior of the panel 27 from the hole mount 28 . The wire harness 21 includes a grommet fall-off prevention structure 23 integrated with a waterproof structure 22 to maintain a waterproof function.

<Waterproof structure 22 and grommet fall-off prevention structure 23>

In FIGS. 2A to 2C , the waterproof structure 22 is formed by a grommet 26 and adopts a known structure. Therefore, detailed embodiments thereof will be omitted here. The grommet fall-off prevention structure 23 is provided integrally with the waterproof structure 22 , and a structure for preventing the grommet 26 from falling off is provided in an inner member 33 of the connector 24 on the one end side, which will be described later. Examples of the profile of the grommet fall-off preventing structure 23 include a structure of the type (described in the first embodiment) having two deformation preventing walls 29, 30 respectively formed with a straight I-shaped section as shown in FIG. A structure of the type (described in the second embodiment) of two deformation preventing walls 49, 50 formed with a J-shaped cross-section with a bent end portion and formed with a U-shaped cross-section when both are viewed as a whole as shown in FIG. 2B , and two deformation-preventing walls 63, 64 (71, 72) having a straight I-shaped section and a J-shaped section with a curved middle portion respectively formed with a U-shaped section when both are viewed as a whole as shown in FIG. 2C ) (83, 84) type (described in the third to fifth embodiments) structure.

<Connector 24 and wire 25>

In FIG. 1A , a connector 24 includes terminal fittings (not shown) provided at ends 25 of a plurality of electric wires, connector housings 31 , 32 accommodating the terminal fittings, and an inner member 33 . The connector housings 31, 32 are resin molded bodies and are not particularly marked, and respectively include a housing main body, a plurality of terminal accommodating chambers formed inside the housing main body, mating connector fitting portions formed outside the housing main body, and An inner fixing portion is also formed outside the case main body and fixed to the inner member 33 . The inner body 33 will be described later. The electric wire 25 includes a conductor and an insulating layer covering the conductor. Here, an ordinary thin wire for low voltage is employed as the wire 25 . Since the terminal fittings are accommodated in the terminal accommodating chambers, respectively, the electric wires 25 are led out from the connector housings 31, 32. As shown in FIG. When a part just drawn out from the connector housing 31, 32 is referred to as the lead-out portion 34, the lead-out portion 34 is arranged on two anti-corrosion parts in Fig. 2A (for convenience, the lead-out portion 34 is schematically marked). Between the deformed walls 29,30. The lead-out portion 34 is accommodated in a one-end side pipe portion 35 of the grommet 26 which will be described later. The plurality of electric wires 25 are formed into a bundle after the lead-out portion 34 is formed, and accommodated in an intermediate pipe portion 37 of the grommet 26 which will be described later.

<Grommet 26>

In FIGS. 1A to 2C , the grommet 26 is an elastic body such as rubber, and is formed in the shown shape including one end side pipe portion 35 , the other end side pipe portion 36 and an intermediate pipe portion 37 disposed therebetween. The one-end side pipe portion 35 is formed at a portion assembled with the one-end side connector 24 and in close contact with an opening edge portion of the mounting hole 28 of the panel 27 . In addition, the one-end side pipe portion 35 is formed at a portion of the lead-out portion 34 that accommodates the plurality of electric wires 25 . The mounting hole 28 according to the present embodiment is formed as an elliptical through hole having a pair of linear portions and a pair of arcuate portions. The one end side pipe portion 35 is formed to include a panel close contact portion 38 closely contacting an opening edge portion, a flange assembly portion 39 assembled to a flange 46 described later, and a wire accommodating dome portion 40 accommodating the lead-out portion 34 . show the shape. The panel close contact portion 38 is formed in a shape that is easy to elastically deform and close contact. The flange assembly part 39 is formed with a concave cross section. The wire accommodating dome 40 is formed with a U-shaped cross section. Since the mounting hole 28 has an elliptical shape, the wire accommodating dome 40 is formed such that the side portion 41 corresponding to the pair of straight portions is relatively long in the grommet axial direction (since the side portion 41 has such a shape, the wire The housing dome 40 can be said to be a shape that is easily deformed inward by itself). In the wire accommodating dome 40 , reference numeral 42 denotes an arc-shaped bottom, and reference numeral 43 denotes an arc-shaped side.

The other end side pipe portion 36 is formed in a shape obtained by reducing the size of the one end side pipe portion 35 in this embodiment. Similar to the one end side pipe portion 35 , the other end side pipe portion 36 includes a panel tight contact portion, a flange assembly portion, and a wire accommodating dome portion (reference numerals of these portions are omitted). The other end side pipe portion 36 is provided so as to be opened in a direction opposite to the one end side pipe portion 35 in this embodiment. The intermediate pipe portion 37 between the other end side pipe portion 36 and the one end side pipe portion 35 is formed in a bellows shape with a circular cross section. The intermediate pipe portion 37 is formed to be freely bendable and stretchable. The intermediate pipe portion 37 may be referred to as a small diameter portion, and the other end side pipe portion 36 and the one end side pipe portion 35 may be referred to as a large diameter portion.

<Internal part 33>

In FIGS. 2A to 4 , the inner member 33 is a resin molded body, and is formed in the illustrated shape including the inner member main body 44 and the two deformation preventing walls 29 , 30 . In the inner member 33 , two deformation preventing walls 29 , 30 serving as characteristic portions of the grommet fall-off preventing structure 23 are integrally formed with the inner member main body 44 . The case receiving portion 45 is formed inside the inner member main body 44 . A flange 46 , two deformation preventing walls 29 , 30 , a plurality of panel engaging portions 47 , and two housing fixing portions 48 are formed on the outer side of the inner member main body 44 . The inner member main body 44 is formed to have the two divided structures described in the second and subsequent embodiments. The housing accommodating portion 45 is formed in a shape capable of receiving and holding the connector housings 31 , 32 (see FIG. 1A ). The flange 46 is an annular plate-shaped portion and is provided outside the connector housings 31 , 32 . The outer peripheral edge of the flange 46 is formed in a convex section as a portion assembled to the flange assembly portion 39 of the grommet 26 . A panel engaging portion 47 is formed at the mounting hole 28 penetrating the panel 27 and hooked at a portion of the other opening edge portion. Two housing fixing portions 48 are formed at portions where the connector housings 31 , 32 are fixed via inner fixing portions (the illustrated shape of the housing fixing portions 48 is an example).

<two anti-deformation walls 29, 30>

In FIGS. 2A to 4 , the two deformation preventing walls 29 , 30 are characteristic parts of the grommet fall-off prevention structure 23 as described above, and are formed as parts that prevent inward deformation of the side part 41 of the wire receiving dome 40 . The two deformation preventing walls 29 , 30 according to the first embodiment are respectively formed with a straight I-shaped section. The two deformation preventing walls 29, 30 are formed in a shape extending (extending downward in the figure) along the wall inner surface of the side portion 41 of the electric wire accommodating dome 40 and formed so that the lead-out portions 34 of the plurality of electric wires 25 are disposed therebetween. shape. The two deformation preventing walls 29, 30 are respectively formed as rectangular wall portions in this embodiment. Base end sides of the two deformation preventing walls 29 , 30 are provided at positions corresponding to a pair of straight line portions of the elliptical mounting hole 28 . The two anti-deformation walls 29, 30 are arranged in parallel as a whole. The two deformation preventing walls 29 , 30 are provided so that their ends are positioned at the boundary portion between the side portion 41 of the wire accommodating dome portion 40 and the arcuate bottom portion 42 . The two deformation preventing walls 29, 30 have rigidity to such an extent that the deformation preventing walls 29, 30 are not easily bent inwardly. In order to increase rigidity, it may be formed such as a trapezoidal wall widened at the base end side. In order to increase rigidity, it can also be formed such as a plurality of vertical ribs (reinforcing ribs).

<Effect of grommet fall-off prevention structure 23>

As described above with reference to FIGS. 1A to 4 , according to the grommet fall-off prevention structure 23 of the first embodiment, since the inner member 33 includes two deformation-preventing walls 29, 30, and the two deformation-preventing walls 29, 30 have The portion of the shape in which the wall inner surface of the wire accommodating dome 40 is extended, therefore, even if an external force is applied to the wire accommodating dome 40 for some reason, the two deformation preventing walls 29, 30 can prevent the wire accommodating dome 40 from moving inwardly. Inner deformation. This deformation prevention also prevents the flange assembly portion 39 of the grommet 26 from falling off the flange 46 of the inner member 33 .

According to the first embodiment, it is possible to provide the grommet drop prevention structure 23 which prevents the grommet 26 from falling off. Thanks to the grommet drop prevention structure 23, a better wire harness 21 can be provided. In other words, it is possible to provide the wire harness 21 that prevents the grommet 26 from coming off. A better structure (23) is also provided since the grommet 26 is prevented from falling out. In other words, the same structure can also be applied to the following second to fifth embodiments.

[Second embodiment]

Hereinafter, a second embodiment will be described with reference to the drawings. Fig. 5 is a view of an inner member including a deformation preventing wall corresponding to Fig. 2B. FIG. 6 is a perspective view of the internal member in FIG. 5 , FIG. 7 is a perspective view of the first divided interior in FIG. 6 and FIG. 8 is a perspective view of the second divided interior in FIG. 6 . The same components as those of the first embodiment are denoted by the same reference numerals, and a detailed description thereof will be omitted.

<Grommet drop-off preventing structure 23 according to the second embodiment>

In FIGS. 2B and 5 , the grommet fall-off prevention structure 23 according to the second embodiment is formed in the inner member 33 similarly to the first embodiment. The grommet fall-off preventing structure 23 according to the second embodiment corresponds to the two deformation preventing walls 49 , 50 integrated with the inner member main body 44 . The two deformation preventing walls 49 , 50 serving as the grommet fall-off prevention structure 23 are respectively formed with a J-shaped section in which each end portion 51 , 52 is bent, and a U-shaped section when both are viewed as a whole. The two deformation preventing walls 49 , 50 are formed as portions that prevent the inward deformation of the side portion 41 of the wire accommodating dome 40 . The two deformation preventing walls 49, 50 are formed in a shape in which the end portions 51, 52 are engaged with each other. The base end sides of the two deformation preventing walls 49, 50 are provided at the same positions as in the first embodiment.

In FIGS. 5 to 8, the deformation preventing wall 49 is formed from the first divided interior 44a (obtained by dividing the inner member main body 44 into two parts, and connected with the second divided interior 44b described later by a hinge). Integral) a continuous wall portion from the base end side up to the distal end portion 51 with a small width change. The deformation preventing wall 49 is formed to extend from the base end side to the middle part (downward in the figure) along the wall inner surface of the side part 41 of the wire accommodating dome part 40 . The deformation preventing wall 49 is formed so that the lead-out portions 34 of the plurality of electric wires 25 are disposed inside the deformation preventing wall 49 from the base end side to the middle portion (see FIG. 2B ). The end portion 51 of the deformation preventing wall 49 is formed in a curved shape so as to extend along the wall inner surface of the arc-shaped bottom 42 of the wire receiving dome portion 40 . The engaging portion 53 is formed on the tip portion 51 of the deformation preventing wall 49 as described above. The catch portion 53 is formed to prevent inward displacement and lateral displacement of the two deformation preventing walls 49 , 50 . The engaging portion 53 is formed in the illustrated shape including an abutment wall 54 , a pair of engaging protrusions 55 , engaging recesses 56 on both sides, and an engaging recess 57 in the middle. The engaging portion 53 prevents the above-mentioned displacement by abutting and engaging. It goes without saying that the deformation preventing wall 49 itself is less likely to bend inward due to the abutment and engagement of the engaging portion 53 .

On the other hand, the deformation preventing wall 50 is formed to be continuous from the base end side with the second divided interior 44b (obtained by dividing the inner member main body 44 into two parts, and integrally connected with the first divided interior 44a by a hinge). The anti-deformation wall 49 for mating is a wide wall portion. The deformation preventing wall 50 is formed to extend from the base end side to the middle portion (downward in the drawing) along the wall inner surface of the side portion 41 of the wire accommodating dome portion 40 . The deformation preventing wall 50 is formed so that the lead-out parts 34 of the plurality of electric wires 25 are disposed inside the deformation preventing wall 50 from the base end side to the middle part. The end portion 52 of the deformation preventing wall 50 is formed in a curved shape so as to extend along the wall inner surface of the arc-shaped bottom 42 of the wire receiving dome portion 40 . The engaging portion 58 is formed on the tip portion 52 . The engaging portion 58 is formed at a portion engaged with the engaging portion 53 of the deformation preventing wall 49 . The engaging portion 58 is formed in the illustrated shape including an abutment wall 59 , engaging protrusions 60 on both sides, an engaging protrusion 61 in the middle, and a pair of engaging recesses 62 .

<Effects of the Grommet Dropout Prevention Structure 23 According to the Second Embodiment>

As described above with reference to FIG. 2B and FIGS. 5 to 8 , according to the grommet fall-off prevention structure 23 of the second embodiment, since the inner part 33 includes two deformation-preventing walls 49, 50, and the two deformation-preventing walls 49, 50 are The portion having a shape extending along the wall inner surface of the wire containing dome 40, therefore, even if an external force is applied to the wire containing dome 40 for some reason, the wire containing dome 40 can be prevented by the two deformation preventing walls 49, 50 Inward deformation. This deformation prevention also prevents the flange assembly portion 39 of the grommet 26 from falling off the flange 46 of the inner member 33 .

According to the second embodiment, it is possible to prevent the grommet 26 from coming off as in the first embodiment. Since the grommet fall-off prevention structure 23 according to the second embodiment is adopted, a better wire harness 21 can also be provided (see FIGS. 1A and 1B ).

[Third embodiment]

Hereinafter, a third embodiment will be described with reference to the drawings. Fig. 9 is a view of an inner member including a deformation preventing wall corresponding to Fig. 2C. FIG. 10 is a perspective view of the internal member in FIG. 9 , FIG. 11 is a perspective view of the first divided interior in FIG. 10 and FIG. 12 is a perspective view of the second divided interior in FIG. 10 . The same components as those of the first and second embodiments are denoted by the same reference numerals, and detailed descriptions thereof will be omitted.

<Grommet drop-off prevention structure 23 according to the third embodiment>

In FIGS. 2C and 9 , a grommet fall-off prevention structure 23 according to a third embodiment is formed in an inner member 33 similarly to the first and second embodiments. The grommet fall-off preventing structure 23 according to the third embodiment corresponds to the two deformation preventing walls 63 , 64 integrated with the inner member main body 44 . The two deformation preventing walls 63 , 64 serving as the grommet fall-off prevention structure 23 are formed to have a J-shaped section and a straight I-shaped section where the intermediate portion 65 is curved, respectively, and are formed with a U-shaped section when both are viewed as a whole. The two deformation preventing walls 63 , 64 are formed as portions that prevent the side portion 41 of the wire accommodating dome 40 from being deformed inwardly. The two deformation preventing walls 63, 64 are formed in a shape in which the end portions 66, 67 are engaged with each other. The base end sides of the two deformation preventing walls 63, 64 are provided at the same positions as in the first and second embodiments.

In FIGS. 9 to 12 , the deformation preventing wall 63 is formed to have a wall portion having a constant width from the base end side continuous with the first divided interior 44 a to the middle portion 65 and the end portion 66 . The deformation preventing wall 63 is formed to extend from the base end side to a part of the middle portion 65 and the tip end portion 66 along the wall inner surface of the side portion 41 of the wire accommodating dome portion 40 . The deformation preventing wall 63 is formed so that the lead-out parts 34 of the plurality of electric wires 25 are disposed inside the deformation preventing wall 63 of a part from the base end side to the middle part and the tip part 66 (see FIG. 2C ). The intermediate portion 65 of the deformation preventing wall 63 is formed in a curved shape so as to extend along the wall inner surface of the arc-shaped bottom 42 of the wire receiving dome portion 40 . The engaging portion 68 is formed on the tip end portion 66 of the deformation preventing wall 63 as described above. In this embodiment, the engaging portion 68 is formed to prevent the deformation preventing wall 64 paired with the deformation preventing wall 63 from being displaced inward. The engaging portion 68 is formed as a stepped contact portion. Reference numeral 69 in the two deformation-preventing walls 63, 64 is a reinforcing rib.

On the other hand, the deformation prevention wall 64 is formed as a wall portion that is wider than the deformation prevention wall 49 for mating on the base end side continuous to the second divided interior 44 b. The deformation preventing wall 64 is formed to extend from the base end side to the tip end portion 67 along the wall inner surface of the side portion 41 of the wire accommodating dome portion 40 . The deformation preventing wall 64 is formed to extend relatively short. The deformation preventing wall 64 is formed so that the lead-out parts 34 of the plurality of electric wires 25 are disposed inside. The engaging portion 70 is formed on the end portion 57 of the deformation preventing wall 64 . The engaging portion 70 is formed as a stepped abutting portion corresponding to the shape of the engaging portion 68 for engaging.

<Effects of the Grommet Dropout Prevention Structure 23 According to the Third Embodiment>

As described above with reference to FIG. 2C and FIGS. 9 to 12 , according to the grommet fall-off prevention structure 23 of the third embodiment, since the inner part 33 includes two deformation-preventing walls 63, 64, and the two deformation-preventing walls 63, 64 are The portion having a shape extending along the wall inner surface of the wire accommodating dome 40, therefore, even if an external force is applied to the wire accommodating dome 40 for some reason, the wire accommodating dome 40 can pass through the two deformation preventing walls 63, 64 prevent inward deformation. This deformation prevention also prevents the flange assembly portion 39 of the grommet 26 from falling off the flange 46 of the inner member 33 .

According to the third embodiment, it is possible to prevent the grommet 26 from coming off as in the first and second embodiments. Since the grommet fall-off prevention structure 23 according to the third embodiment is adopted, a better wire harness 21 can also be provided (see FIGS. 1A and 1B ).

[Fourth Embodiment]

Hereinafter, a fourth embodiment will be described with reference to the drawings. Fig. 13 is a view of an inner member with a deformation-resistant wall corresponding to Fig. 2C. FIG. 14 is a perspective view of the internal member in FIG. 13 , FIG. 15 is a perspective view of the first divided interior in FIG. 14 and FIG. 16 is a perspective view of the second divided interior in FIG. 14 . The same components as those of the first to third embodiments are denoted by the same reference numerals, and detailed descriptions thereof will be omitted.

<Grommet Drop-off Prevention Structure 23 According to Fourth Embodiment>

In FIGS. 2C and 13 , a grommet fall-off preventing structure 23 according to a fourth embodiment is formed in an inner member 33 similarly to the first to third embodiments. The grommet fall-off preventing structure 23 according to the fourth embodiment corresponds to the two deformation preventing walls 71 , 72 integrated with the inner member main body 44 . The two deformation preventing walls 71, 72 serving as the grommet fall-off prevention structure 23 are respectively formed to have a J-shaped section and a straight I-shaped section with the middle portion 73 curved, and are formed with a U-shaped section when both are viewed as a whole. The two deformation preventing walls 71 , 72 are formed as portions that prevent the side portion 41 of the wire accommodating dome 40 from being deformed inwardly. The two deformation preventing walls 71, 72 are formed in a shape in which the end portions 74, 75 are engaged with each other. The base end sides of the two deformation preventing walls 71, 72 are provided at the same positions as in the first to third embodiments.

In FIGS. 13 to 16 , the deformation preventing wall 71 is formed to have a wall portion having a small change in width from the base end side continuous with the first divided interior 44 a to the middle portion 73 and the tip portion 74 . The deformation preventing wall 71 is formed to extend from the base end side to a part of the middle portion 73 and the tip end portion 74 along the wall inner surface of the side portion 41 of the wire accommodating dome portion 40 . The deformation prevention wall 71 is formed so that the lead-out parts 34 of the plurality of electric wires 25 are disposed inside the deformation prevention wall 71 from the base end side to a part of the middle part 73 and the tip part 74 (see FIG. 2C ). The intermediate portion 73 of the deformation preventing wall 71 is formed in a curved shape so as to extend along the wall inner surface of the arc-shaped bottom 42 of the wire accommodating dome portion 40 . The engaging portion 76 is formed on the end portion 74 of the deformation preventing wall 71 as described above. In the present embodiment, the engaging portion 76 is formed to prevent inward displacement of the deformation preventing wall 72 for mating. As will be described later, since the engaging portion 76 can be held by insertion, the engaging portion 76 is formed not to be laterally displaced. The engaging portion 76 is formed as a recess having a long inner wall 77 , a short outer wall 78 , and a connecting portion 79 therebetween.

On the other hand, the deformation prevention wall 72 is formed as a wall portion that is wider than the deformation prevention wall 71 for mating on the base end side continuous to the second divided interior 44 b. The deformation preventing wall 72 is formed to extend from the base end side to the tip end portion 75 along the wall inner surface of the side portion 41 of the wire accommodating dome portion 40 . The deformation preventing wall 72 is formed so that the lead-out parts 34 of the plurality of electric wires 25 are disposed inside. The engaging portion 80 is formed on the end portion 75 of the deformation preventing wall 72 . The engaging portion 80 is formed in the illustrated shape including an insertion wall portion 81 matching the groove of the engaging portion 76 for engaging and an abutting portion 82 abutting the tip of the inner wall 77 of the engaging portion 76 .

<Effects of the Grommet Dropout Prevention Structure 23 According to the Fourth Embodiment>

As described above with reference to FIG. 2C and FIGS. 13 to 16 , according to the grommet fall-off prevention structure 23 of the fourth embodiment, since the inner part 33 includes two deformation-preventing walls 71, 72, and the two deformation-preventing walls 71, 72 are There is a portion having a shape extending along the wall inner surface of the wire receiving dome 40, so even if an external force is applied to the wire receiving dome 40 for some reason, the wire receiving dome 40 can pass through the two deformation preventing walls 71, 72 to prevent inward deformation. This deformation prevention also prevents the flange assembly portion 39 of the grommet 26 from falling off the flange 46 of the inner member 33 .

According to the fourth embodiment, it is possible to prevent the grommet 26 from coming off as in the first to third embodiments. Since the grommet fall-off prevention structure 23 according to the fourth embodiment is adopted, a better wire harness 21 can also be provided (see FIGS. 1A and 1B ).

[Fifth Embodiment]

Hereinafter, a fifth embodiment will be described with reference to the drawings. Fig. 17 is a view of an inner member with a deformation-resistant wall corresponding to Fig. 2C. FIG. 18 is a perspective view of the internal member in FIG. 17 , FIG. 19 is a perspective view of the first divided interior in FIG. 18 and FIG. 20 is a perspective view of the second divided interior in FIG. 18 . The same components as those of the first to fourth embodiments are denoted by the same reference numerals, and detailed descriptions thereof will be omitted.

<Grommet Drop-off Prevention Structure 23 According to Fourth Embodiment>

In FIGS. 2C and 17 , a grommet fall-off preventing structure 23 according to a fifth embodiment is formed in an inner member 33 similarly to the first to fourth embodiments. The grommet fall-off preventing structure 23 according to the fifth embodiment corresponds to the two deformation preventing walls 83 , 84 integrated with the inner member main body 44 . The two deformation preventing walls 83, 84 serving as the grommet fall-off prevention structure 23 are respectively formed to have a J-shaped section and a straight I-shaped section with the intermediate portion 85 curved, and are formed to have a U-shaped section when both are viewed as a whole. The two deformation preventing walls 83 , 84 are formed as portions that prevent the inward deformation of the side portion 41 of the wire accommodating dome 40 . The two deformation preventing walls 83, 84 are formed in a shape in which the end portions 86, 87 are engaged with each other. The base end sides of the two deformation preventing walls 83, 84 are provided at the same positions as in the first to fourth embodiments.

In FIGS. 17 to 20 , the deformation preventing wall 83 is formed to have a wall portion having a small change in width from the base end side continuous with the first divided interior 44 a to the middle portion 85 and the terminal portion 86 . The deformation preventing wall 83 is formed to extend from the base end side to a part of the middle portion 85 and the tip end portion 86 along the wall inner surface of the side portion 41 of the wire accommodating dome portion 40 . The deformation prevention wall 83 is formed so that the lead-out parts 34 of the plurality of electric wires 25 are disposed inside the deformation prevention wall 83 from the base end side to a part of the middle part 85 and the tip part 86 (see FIG. 2C ). The intermediate portion 85 of the deformation preventing wall 83 is formed in a curved shape so as to extend along the wall inner surface of the arc-shaped bottom 42 of the wire receiving dome portion 40 . The engaging portion 88 is formed on the end portion 85 of the deformation preventing wall 83 as described above. In the present embodiment, the engaging portion 88 is formed to prevent the inward displacement of the deformation preventing wall 84 for mating. As will be described later, the engaging portion 88 is formed not to be displaced laterally due to uneven engagement. The engaging portion 88 is formed in the illustrated shape including an abutment wall 89 and a convex portion 90 protruding from the center of the lower portion of the abutment wall 89 .

On the other hand, the deformation prevention wall 84 is formed as a wall portion that is wider than the deformation prevention wall 83 for mating on the base end side continuous to the second divided interior 44 b. The deformation preventing wall 84 is formed to extend from the base end side to the tip end portion 87 along the wall inner surface of the side portion 41 of the wire accommodating dome portion 40 . The deformation preventing wall 84 is formed so that the lead-out parts 34 of the plurality of electric wires 25 are disposed inside. The engaging portion 91 is formed on the end portion 87 of the deformation preventing wall 84 . The engaging portion 91 is formed to include an abutting wall 92 abutting on the abutting wall 88 of the engaging portion 89 for engaging and a groove 93 formed by cutting out the center of the lower portion of the abutting wall 92 . show the shape.

<Effects of the Grommet Dropout Prevention Structure 23 According to the Fifth Embodiment>

As described above with reference to FIG. 2C and FIGS. 17 to 20 , according to the grommet fall-off prevention structure 23 of the fifth embodiment, since the inner part 33 includes two deformation-preventing walls 83, 84, and the two deformation-preventing walls 83, 84 are There is a portion having a shape extending along the wall inner surface of the wire receiving dome 40, so even if an external force is applied to the wire receiving dome 40 for some reason, the wire receiving dome 40 can pass through the two deformation preventing walls 83, 84 prevents inward deformation. This deformation prevention also prevents the flange assembly portion 39 of the grommet 26 from falling off the flange 46 of the inner member 33 .

According to the fifth embodiment, it is possible to prevent the grommet 26 from coming off as in the first to fourth embodiments. A better wire harness 21 can also be provided due to the adoption of the grommet fall-off prevention structure 23 according to the fifth embodiment (see FIGS. 1A and 1B ).

Here, the details of the above-described embodiments are summarized as follows. A non-limiting embodiment of the present disclosure relates to a wire harness including: a connector disposed in alignment with a mounting hole of a panel; a grommet assembled to the connector and tightly fitted to an opening edge portion of the mounting hole contacts; and a plurality of wires inserted into the grommet. The connector includes: terminal fittings provided at ends of the plurality of electric wires; a connector housing accommodating the terminal fittings; and an inner member having an inner member provided outside the connector housing. annular plate flange. The grommet includes: a panel tight contact portion that is in close contact with the edge portion of the one opening; a flange assembly portion that is assembled to the flange; and a wire receiving dome that receives the The lead-out portion of the plurality of electric wires from the connector housing (the lead-out portion of the plurality of electric wires is positioned so as to be next to or close to the connector housing). The inner member includes two deformation preventing walls that prevent inward deformation of the wire receiving dome. The two deformation preventing walls extend along a wall inner surface of the wire accommodating dome and are arranged to sandwich the lead-out portion therebetween.

According to the above-mentioned present disclosure, since the inner member includes two deformation-preventing walls, and the two deformation-preventing walls are portions having a shape extending along the wall inner surface of the wire accommodating dome, even if the wire accommodating dome is damaged for some reason, External force is applied to the dome, and the wire containing dome can also be prevented from inward deformation by two anti-deformation walls. This deformation prevention also prevents the flange assembly portion of the grommet from falling off the flange of the inner member. According to the present disclosure, there is provided a wire harness including a grommet fall-off preventing structure that prevents the grommet from falling off.

According to an aspect of the present disclosure, there is provided that each of the two deformation preventing walls has a straight I-shaped section.

According to the present disclosure described above, since the two walls each having a straight I-shaped section extend along the wall inner surface of the wire accommodating dome as a deformation preventing wall, even if an external force is applied to the wire accommodating dome for some reason, the wires Accommodating the dome also prevents inward deformation. According to the present disclosure, an aspect of two deformation-resistant walls that prevent grommets from falling out is provided.

According to an aspect of the present disclosure, there is provided that each of the two deformation-preventing walls has a J-shaped section with a bent end portion, and the entirety of the J-shaped sections of the two deformation-preventing walls has a U-shaped section.

According to the above-mentioned present disclosure, since the two walls each having a J-shaped cross-section with a bent end portion extend along the wall inner surface of the wire accommodating dome as a deformation-preventing wall, even if the wire accommodating dome is deformed for some reason, External force, wire containment dome can prevent inward deformation. According to the present disclosure, an aspect of two deformation-resistant walls that prevent grommets from falling out is provided.

According to an aspect of the present disclosure, there is provided that the two deformation preventing walls are formed in a shape in which the end portions are engaged with each other.

According to the present disclosure described above, since the end portions of the two deformation preventing walls are engaged with each other, the shape stability of the two deformation preventing walls is ensured, thereby preventing the grommet from coming off.

According to an aspect of the present disclosure, it is provided that the two deformation-preventing walls are formed to have a straight I-shaped section and a J-shaped section with a middle portion curved, respectively, and the entire straight I-shaped section and The J-shaped section has a U-shaped section.

According to the above-mentioned present disclosure, since the two walls including the straight I-shaped section wall and the middle portion curved J-shaped section wall extend along the wall inner surface of the wire accommodating dome as the deformation-preventing wall, even if due to some Because external force is applied to the wire housing dome, the wire housing dome also prevents inward deformation. According to the present disclosure, an aspect of two deformation-resistant walls that prevent grommets from falling out is provided.

According to an aspect of the present disclosure, there is provided a shape in which the two deformation preventing walls are formed in such a shape that the end portion of the linear I-shaped section and the end portion of the J-shaped section whose middle portion is bent are engaged with each other.

According to the present disclosure described above, since the tip portions (ends) of the two deformation preventing walls respectively having the I shape and the J shape are engaged with each other, the shape stability of the two deformation preventing walls is ensured, thereby preventing the grommet from coming off.

According to an aspect of the present disclosure, there is provided that the mounting hole of the panel is formed in an oval shape having a pair of straight portions and a pair of arc portions, and the two deformation preventing walls are provided on the pair of straight portions. on the side.

According to the above-mentioned present disclosure, since the two deformation-preventing walls are provided on the side surfaces of the pair of linear portions of the mounting hole of the panel, even at the position where the wire receiving dome of the prior art grommet necessarily deforms inwardly, it is prevented. out of shape.

According to an aspect of the present disclosure, there is provided a grommet fall-off preventing structure, including: a panel having a mounting hole; a connector arranged to be aligned with the mounting hole; and a grommet assembled to the connector And it is in close contact with an opening edge of the mounting hole. The connector includes: terminal fittings provided at ends of a plurality of electric wires; a connector housing accommodating the terminal fittings; and an inner member having a ring shape provided outside the connector housing. Plate flange. The grommet includes: a panel tight contact portion that is in close contact with the edge portion of the one opening; a flange assembly portion that is assembled to the flange; and a wire receiving dome that receives the The lead-out portion of the plurality of electric wires from the connector housing (the lead-out portion of the plurality of electric wires is positioned so as to be next to or close to the connector housing). The inner member includes two deformation preventing walls that prevent inward deformation of the wire receiving dome. The two deformation preventing walls are formed in a shape extending along a wall inner surface of the wire accommodating dome and in a shape in which the lead-out portion is disposed therebetween.

According to the above-mentioned present disclosure, since the inner member includes two deformation-preventing walls, and the two deformation-preventing walls are portions having a shape extending along the wall inner surface of the wire accommodating dome, even if the wire accommodating dome is damaged for some reason, External force is applied to the dome, and the wire containing dome can also be prevented from inward deformation by two anti-deformation walls. This deformation prevention also prevents the flange assembly portion of the grommet from falling off the flange of the inner member. According to the present disclosure, a better structure is provided since the grommets are prevented from falling out.

In addition, it goes without saying that various modifications can be made without departing from the gist of the present disclosure.

Claims (6)

1. A wire harness, comprising: a connector arranged to align with the mounting hole of the panel; a grommet assembled to the connector and in close contact with an opening edge portion of the mounting hole; and a plurality of wires, which are inserted into the grommet, Wherein, the connector includes: terminal fittings provided at ends of the plurality of electric wires; a connector housing housing the terminal fitting; and an inner member having an annular plate-shaped flange disposed outside the connector housing; Wherein, the grommet includes: a panel close contact portion, which is in close contact with the edge portion of the one opening; a flange assembly that is assembled to the flange; and a wire accommodating dome accommodating lead-out portions of the plurality of electric wires drawn out from the connector housing; Wherein, the inner member includes two anti-deformation walls preventing inward deformation of the wire containing dome, and Wherein, the two deformation-preventing walls extend along the wall inner surface of the wire receiving dome and are arranged to sandwich the lead-out part therebetween; Wherein, each of the two deformation-preventing walls has a J-shaped section with a bent end portion, and the entirety of the J-shaped sections of the two deformation-preventing walls has a U-shaped section; Wherein, the two deformation preventing walls are formed in a shape in which the end portions engage with each other. 2. The wire harness according to claim 1, Wherein, the mounting hole of the panel is formed in an oval shape having a pair of straight portions and a pair of arc portions, and the two deformation preventing walls are provided on side surfaces of the pair of straight portions. 3. A wire harness, comprising: a connector arranged to align with the mounting hole of the panel; a grommet assembled to the connector and in close contact with an opening edge portion of the mounting hole; and a plurality of wires, which are inserted into the grommet, Wherein, the connector includes: terminal fittings provided at ends of the plurality of electric wires; a connector housing housing the terminal fitting; and an inner member having an annular plate-shaped flange disposed outside the connector housing; Wherein, the grommet includes: a panel close contact portion, which is in close contact with the edge portion of the one opening; a flange assembly that is assembled to the flange; and a wire accommodating dome accommodating lead-out portions of the plurality of electric wires drawn out from the connector housing; Wherein, the inner member includes two anti-deformation walls preventing inward deformation of the wire containing dome, and Wherein, the two deformation-preventing walls extend along the wall inner surface of the wire receiving dome and are arranged to sandwich the lead-out part therebetween; Wherein, the two deformation-preventing walls are formed to have a straight I-shaped section and a J-shaped section with a curved middle portion, respectively, and the entirety of the straight I-shaped section and the J-shaped section of the two deformation-preventing walls has U-shaped section; Wherein, the two deformation preventing walls are formed in a shape in which an end portion in the straight I-shaped cross section and an end portion in a J-shaped cross section bent in the middle portion are engaged with each other. 4. The wiring harness according to claim 3, Wherein, the mounting hole of the panel is formed in an oval shape having a pair of straight portions and a pair of arc portions, and the two deformation preventing walls are provided on side surfaces of the pair of straight portions. 5. A grommet anti-shedding structure, comprising: a panel having mounting holes; a connector positioned to align with the mounting hole; and a grommet assembled to the connector and in close contact with an opening edge portion of the mounting hole, Wherein, the connector includes: a terminal fitting provided at the end of a plurality of wires; a connector housing housing the terminal fitting; and an inner member having an annular plate-shaped flange disposed outside the connector housing; Wherein, the grommet includes: a panel close contact portion, which is in close contact with the edge portion of the one opening; a flange assembly that is assembled to the flange; and a wire accommodating dome accommodating lead-out portions of the plurality of electric wires drawn out from the connector housing; wherein the inner member includes two deformation-preventing walls that prevent inward deformation of the wire receiving dome; and Wherein, the two deformation-preventing walls extend along the wall inner surface of the wire receiving dome and are arranged to sandwich the lead-out part therebetween; Wherein, each of the two deformation-preventing walls has a J-shaped section with a bent end portion, and the entirety of the J-shaped sections of the two deformation-preventing walls has a U-shaped section; Wherein, the two deformation preventing walls are formed in a shape in which the end portions engage with each other. 6. A grommet anti-shedding structure, comprising: a panel having mounting holes; a connector positioned to align with the mounting hole; and a grommet assembled to the connector and in close contact with an opening edge portion of the mounting hole, Wherein, the connector includes: a terminal fitting provided at the end of a plurality of wires; a connector housing housing the terminal fitting; and an inner member having an annular plate-shaped flange disposed outside the connector housing; Wherein, the grommet includes: a panel close contact portion, which is in close contact with the edge portion of the one opening; a flange assembly that is assembled to the flange; and a wire accommodating dome accommodating lead-out portions of the plurality of electric wires drawn out from the connector housing; wherein the inner member includes two deformation-preventing walls that prevent inward deformation of the wire receiving dome; and Wherein, the two deformation-preventing walls extend along the wall inner surface of the wire receiving dome and are arranged to sandwich the lead-out part therebetween; Wherein, the two deformation-preventing walls are formed to have a straight I-shaped section and a J-shaped section with a curved middle portion, respectively, and the entirety of the straight I-shaped section and the J-shaped section of the two deformation-preventing walls has U-shaped section; Wherein, the two deformation preventing walls are formed in a shape in which an end portion in the straight I-shaped cross section and an end portion in a J-shaped cross section bent in the middle portion are engaged with each other.

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